Patent US4514830A successfully refreshed from Google Patents.
US2016144A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical circuit
Assignee: Individual
•
Filing: 1934-11-02
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Granted: 1935-10-01
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Expires: 1954-11-02
Abstract
No abstract record available.
Inventors
- 👤 Alfred E Hill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:25
CPC Classifications
H; H01; H01H; H01H9/00; H01H9/54; G; G04; G04C; G04C3/00; G04C3/02; G04C3/027
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1938-09-30 | 1939-04-01 | 1939-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1942-09-30 | 1943-04-01 | 1943-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1946-09-30 | 1947-04-01 | 1947-10-01 | $7700.00 | Window Closed / Lapsed |